Hello Kafka experts, Any comments on this please? Regards, Sunil.
On Tue, 10 Feb 2026 at 10:25 PM, sunil chaudhari < [email protected]> wrote: > Hi Matthias, > Thanks for quick reply. > Little precise about my need… > I have 23 brokers in the confluent cluster. > I have 500+ filebeats running as producers in prod environment. All > filebeats have static broker hosts configured. Some have 3 brokers, some 8 > some 12 and some has 23 brokers configured. > Also there are 70+ logstash as consumers. > All I want is… Switching off the confluent version on Zookeeper and start > apache version(anything that can support confluent 7.7.2) on same hosts > same ports. ( Not sure about data path directory) > Same for all brokers in rolling fashion Not at once. > I dont want any downtime. 500+ filebeats and 70+ logstash shouldn’t > experience any downtime. > > is it possible? > > Regards, > Sunil. > > On Tue, 10 Feb 2026 at 9:44 PM, Matthias J. Sax <[email protected]> wrote: > >> > OS apache kafka version 3.4 Or 3.5 is last >> >> version that supports zookeeper. >> >> That's not correct. Apache Kafka supports ZK up-to-including 3.9. >> >> Confluent 7.7 maps to Apache Kafka 3.7, Confluent guarantee that it's >> compatible is OSS Kafka. So switching to Apache Kafka 3.7 should not >> cause any issues. Of course, as always you might want to test this in a >> non-prov environment first. >> >> In any case, if you want to move to 4.x, you need to migrate off ZK >> first. It's recommended to upgrade to 3.9 first, as it's the most stable >> release with respect to ZK to KRaft migration. Migration to KRaft would >> be the next step. And after you are on KRaft, upgrade to your desired >> 4.x version. >> >> Of course, it's also possible to skip the step to migrate to 3.9, and >> upgrade from 3.7 (with KRaft) to 4.x directly. >> >> >> -Matthias >> >> >> >> On 2/10/26 7:22 AM, sunil chaudhari wrote: >> > Hi , >> > >> > Any kafka admin to help here and tell me migration path for this >> version. I >> > have confluent-7.7.2 running with Zookeeper. I have to move to Open >> source >> > Apache Kafka 4.0 or above. OS apache kafka version 3.4 Or 3.5 is last >> > version that supports zookeeper. Give me migration path so that I move >> > form "confluent-7.72 with Zookeeper" to OS apache Kafka 4.0 or Above >> with >> > KRaft Controllers. >> > >> > What if I move from Zookeeper to Kraft in Confluent 7.7.2 then I do >> Inplace >> > upgrade to OS apache kafka 3.5 or 3.4? Here I can get rid of >> Confluent. And >> > then I upgrade to 4.0 Open Source version. >> > >> > Is there any risk if metadata in Confluent not match with metadata in >> > apache kafka. ? >> > >> > Regards, >> > >> > Sunil. >> > >> >>
